The UK’s biggest fund management group voted against more than 100 chairmen last year, at firms including Barclays, Ted Baker and Sports Direct, for failing to boost the number of women in their boardrooms. Legal & General Investment Management, which manages more than £1tn in assets, more than doubled the number of protest votes cast in 2018 over a lack of gender diversity. A year earlier the asset manager only voted against 37 UK chairmen. This also marked a significant…